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Table 4 Rate constant and R2 at different ore particle sizes

From: Effects of alkali solution on the dissolution kinetics and optimization processes of iron from Akwuke ore

Particle sizes (μm) Surface chemical Diffusion controlled
Ks (min¯1) R2 Kd (min¯1) R2
45 0.0013 0.994 0.0010 0.997
75 0.0014 0.995 0.0013 0.998
150 0.0018 0.995 0.0015 0.998
300 0.0019 0.995 0.0017 0.998
600 0.0022 0.996 0.0020 0.998